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Structural
Lubron
TFSelf-Lubricating PTF
Spherical Bearings
Lubron Bearing System
Bearings to move the world.
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Lubron TF Structural 2
Lubron TFSelf-LubricatingPTFE Spherical Bearings
LUBRON
TF spherical bearing assemblies offer simple mechanical
design, heavy load capability and high rotational capacity. Spherical
bearings can accommodate large loads by virtue of its geometry. A more
uniform load distribution under the spherical bearing makes it possible to
reduce the overall dimensions. Spherical bearings are designed to permit
horizontal movement and vertical rotation, as well as complete structural
freedom of rotation about any horizontal axis. Vertical rotation can be
large, limited only by the geometry of the bearing. Rotational movements
of the superstructure are accommodated by the sliding of the concaveand convex spherical surfaces, which allow rotation in any direction with
a minimum of resistance.
MULTI-DIRECTIONAL
LUBRON TF multi-rotational spherical bearing assemblies typically consist
of an upper sole plate, concave bearing plate, convex mating plate and a
lower base or masonry plate, and are available either unguided, guided or
fixed. Spherical bearings offer superior reliability compared to other types
of high load multi-rotational (HLMR) bearings. Spherical bearings are
characterized by their insensitivity to temperature changes, no permanentrestoring moment load after rotation of the superstructure, and larger
admissible rotation angles.
LUBRON TF spherical bearings are designed to
accommodate sliding, rotation and severe angular
misalignment. LUBRON TF spherical bearings
provide exceptionally low coefficient of friction and
heavy load capability, and are fabricated, tested and
inspected in accordance with the latest ASTM,
AASHTO and State DOT standards, plans and
specifications. LUBRON TF multi-rotational spherical
bearings have been performing flawlessly in a variety
of rigorous structural applications for more than 20
years.
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Lubron TF Structural 3
Lubron TFSelf-LubricatingPTFE Spherical Bearings
SUPERIOR CONSTRUCTION
LUBRON TF spherical bearings offer the most advanced design andconstruction available for high load and low coefficient of friction
applications. Sliding surfaces are permanently bonded with a woven
PTFE fabric liner. Unlike PTFE resin sheets used in other types of
bearings, woven PTFE fabric liners prevent cold flow and compressive
creep leading to bearing failure. LUBRON TFs proprietary construction
provides full support of the individual PTFE fibers and insures a rigid
bond of the fabric to the bearing substrate, two basic requirements
that DuPont specifies for the successful use of Teflonas a bearing
surface. The effective entrapment of the PTFE and glass fibers with
high strength bonding resins helps prevent cold flow and minimizes
heat buildup. The high molecular orientation of PTFE fiber gives it
approximately 25 times the tensile strength of PTFE resins, making
PTFE woven fabrics particularly suitable for heavy load applications.
Low shear stresses and 100% supported bearing surfaces are also
two important advantages LUBRON TF bearings offer over other
mechanically locked systems.
HIGH LOAD CAPACITY
LUBRON TF spherical bearings are generally designed to
accommodate bearing loads of 3.5 ksi (24 MPa) to 10 ksi (69 MPa),
and can withstand loads in excess of 60 ksi (414 MPa) withoutcold flow.
LOW FRICTION
The coefficient of friction for PTFE fibers is the lowest of all known
fibers. The static coefficient of friction is only slightly higher than the
dynamic value, minimizing stick-slip. LUBRON TF spherical bearings
typically exhibit a coefficient of friction of less than 0.04, depending on
the bearing load, temperature, velocity, finish and hardness of the
mating surface.
HIGH SHEAR RESISTANCE
LUBRON TF woven PTFE fabric is permanently bonded to the
substrate metallic surface, and will resist a minimum 25% of the
allowable vertical load in horizontal shear between the adhering
elements as tested in accordance with Federal Specification
MMM-A-175 Method 1033.
Unguided Spherical Bearings-bearings capable of multi-
directional rotation with sliding movement unrestricted in any
horizontal direction.
Fixed Spherical Bearings-bearings capable of multi-
directional rotation and restrained from horizontal movementin any direction.
Guided Spherical Bearings- bearings capable of multi-
directional rotation with sliding movement restricted to one
horizontal direction.
Teflon is a registered trademark of DuPont
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Lubron TF Structural 4
Lubron TFSelf-LubricatingPTFE Spherical Bearings
THERMAL INFLUENCES
LUBRON TF bearings have excellent thermal stability and are
recommended for continuous operation from -148F (-100C) to 500F
(260C) and intermittent exposure up to 550F (288C).
LOW WEAR RATE
LUBRON TF bearings have a very low rate of wear, which is defined in
terms of volumetric loss of material over time. Volumetric wear is
approximately proportional to the unit load multiplied by the distance
traveled, and is generally expressed as follows:
W = KPVT
where W = wear depth, in (cm)
K = proportionality constant, in3-min/ft-lb-hr (cm3-min/m-kg-hr)
P = bearing pressure, psi (kg/cm2)
V = surface velocity, ft/min (m/min)
T = elapsed time, hr
K values for LUBRON TF bearings have been derived from independent
testing, and can be used to determine the amount of wear that will occur
over a period of time. For most applications, a value of K = 9.1 x 10-10in3
-min/ft-lb-hr is appropriate, which would be equivalent to 0.00045 inches
of wear after 100,000 inches of travel at 3.5 ksi (24 MPa).
PROVEN RELIABILITY
From the demanding performance requirements of seismic isolation to the
rigorous operating conditions of offshore drilling platform bridges in the
North Sea, LUBRON TF spherical bearings have satisfied the most difficult
challenges in structural applications since 1978.
APPLICATIONS
LUBRON TF spherical bearings are widely used in structural applicationsto accommodate thermal, seismic and mechanical expansion and rotation.
Typical applications include highway bridges, railroad bridges, light rail
transit, offshore oil platforms, airports, sports arenas, convention centers,
air pollution control equipment, power plants and processing plants.
CoeffcientofFriction
LUBRON TF vs 304 SS
Coefficient of Friction vs Load
Load (ksi)
.05
.045
.04
.035
.03
.025
.02
.015
.01
.005
0
1 2 3 4 5 6 7 8 9
CoeffcientofFriction
LUBRON TF vs 17-4 PH
Coefficient of Friction vs Temperature @ 6000 psi
Temperature (F)
.07
.06
.05
.04
.03
.02
.01
0
0 10 20 30 40 50 60 80 1 00 120 140 160
.045
.04
.035
.03
.025
.02
.015
.01
.005
0CoeffcientofFriction
LUBRON TF vs 304 SS
Coefficient of Friction vs Cycles @ 6000 ps i
0 0.25 0.5 1 2 4 6 8 10
Cycles (x100)
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Lubron TF Structural 5
Lubron TFSelf-LubricatingPTFE Spherical Bearings
DESIGN PARAMETERS
LUBRON TF spherical bearings shall be designed in accordance with thefollowing requirements unless otherwise specified by the Project Plans,
Specifications and Special Provisions:
Spherical bearings shall accommodate the maximum total vertical load
required unless otherwise specified. Maximum vertical load is assumed
to be the total dead and live loads.
Spherical bearings shall be designed to accommodate the maximum
allowable concrete stress.
Spherical bearings shall provide full multi-directional rotational capacity
and accommodate an angular vertical displacement of at least 2
(.035 radians) unless otherwise specified.
The projected area of the woven PTFE surface shall be designed for
a maximum working stress of 3.5 ksi under full vertical load unless
otherwise specified. Diameter of the concave spherical recess is
generally used to determine projected surface area.
Spherical bearings shall be designed to resist the maximum horizontal
load, or at least 10% of the maximum vertical load, unless otherwise
specified. Guided and fixed bearings shall be designed to insure the
stability of the bearing components under maximum horizontal load
and minimum vertical load conditions. Minimum vertical load is
assumed to be the total dead load only.
Spherical bearings shall be designed to accommodate the total
movement as specified. Unguided and guided sole plates shall
completely cover the concave bearing plate in all longitudinal and
lateral operating positions with a minimum 1/2 (12.7 mm) distance
from the edge of the sole plate sliding surface to the edge of the
bearing plate for every direction of movement.
All welded and bolted connections shall be designed to resist the
maximum horizontal load, or at least 10% of the maximum vertical load,
unless otherwise specified. Spherical bearings shall be designed to
accommodate uplift when required.
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Lubron TF Structural 6
Lubron TFSelf-LubricatingPTFE Spherical Bearings
SPHERICAL BEARING COMPONENTS
Concave Bearing Component-square or round plate with a concavespherical recess designed to accommodate rotation and angular
deflection. For unguided and guided spherical bearings, both the
concave recess and the upper side of the concave bearing plate shall
be permanently lubricated with a woven PTFE fabric liner. Two sides of
a guided concave bearing plate shall also be permanently lubricated.
Fixed spherical bearings shall be permanently lubricated on the concave
surface only. The woven PTFE fabric liner shall have a thickness not less
than 0.020 (0.5 mm) or greater than .125 (3.2 mm) after compression.
Convex Mating Component-round plate with a convex spherical surface
designed to accommodate rotation and angular deflection. The convexplate shall be machined from solid stainless steel, or alternatively
fabricated using carbon steel with a minimum 3/32 (2.4 mm) thick
stainless steel weld overlay or hard chromium plated in accordance with
Federal Specification QQ-C-320B Class 2 with a Rockwell C hardness of
not less than 60. The convex surface shall be polished to a maximum 20
microinch (0.5 micrometer) finish. The convex plate shall be recessed
into and/or attached to the base plate with a full fillet weld around the
entire perimeter of the convex plate.
Sole Plate-upper plate affixed to the superstructure. Unguided and
guided sole plates shall be machined from solid stainless steel, or
alternatively fabricated from carbon steel with a minimum 16 gauge
(1.6 mm) thick stainless steel sheet full perimeter welded to the carbon
steel plate or hard chromium plated in accordance with Federal
pecification QQ-C-320B Class 2 with a minimum Rockwell C60 hardness.
The sliding surface shall be polished to a maximum 20 microinch
(0.5 micrometer) finish. Guided sole plates shall have two guide bars
connected to the lower side of the sole plate to restrict movement in one
horizontal direction with corrosion resistant sliding surfaces.
Base Plate (Masonry Plate)-lower steel plate to be affixed to the supporting
substructure.
Anchorage-anchor bolts and welded studs are generally furnished foraffixing the bearing assembly to the superstructure and supporting
substructure.
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Lubron TF Structural 7
Lubron TFSelf-LubricatingPTFE Spherical Bearings
SIZING GUIDE
The size of the spherical bearing is determined by the allowable design load and the maximum vertical and horizontal
loads which occur. Design loads should be selected to suit the appropriate state and federal design codes. Bearing
sizes may also be influenced by the maximum allowable concrete stress and other factors limiting the bearing load.
LUBRON TF spherical bearings are designed to resist horizontal forces acting in any direction. A maximum horizontal
load equal to 40% of the minimum concurrent vertical load is recommended for most applications.
To accommodate maximum horizontal movement, the required sole plate size for standard size bearings can be
determined using the following size charts. Using the appropriate bearing design load and maximum vertical load, select
the proper bearing plate size A and corresponding sole plate size C and D. The maximum bearing movement,
dimensions E and F, must be added to dimensions C and D respectively. Maximum movement is defined to be
the total movement from the preset position. The size chart for unguided bearings allows for 45 rotation of the concave
bearing component. The diagonal dimension B for the bearing plate is used to determine the sole plate size.
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Lubron TF Structural 8
Lubron TFSelf-LubricatingPTFE Spherical Bearings
SIZE CHART (INCHES)
UNGUIDED BEARING ASSEMBLIES
SIZE CHART (MM)
BEARING DESIGN
LOAD (ksi)
BRG
PLATE
UNGUIDED
SOLE PLATE
3.5 5.0 7.0 10.0 A C D
MAXIMUM VERTICAL LOAD
(kips)(inch) (inch) (inch)
50 71 99 142 5 8.00+E 8.00+F
76 108 152 216 6 9.50+E 9.50+F
107 153 215 307 7 11.00+E 11.00+F
144 206 289 431 8 12.50+E 12.50+F
187 267 374 535 9 13.75+E 13.75+F
235 336 470 672 10 15.25+E 15.25+F
289 413 578 825 11 16.50+E 16.50+F
348 497 696 994 12 18.00+E 18.00+F
413 589 825 1179 13 19.25+E 19.25+F
483 689 965 1379 14 20.75+E 20.75+F
539 770 1078 1539 15 22.25+E 22.25+F
619 884 1237 1767 16 23.50+E 23.50+F
704 1005 1407 2011 17 25.00+E 25.00+F
794 1135 1589 2270 18 26.50+E 26.50+F
891 1272 1781 2545 19 27.25+E 27.75+F
992 1418 1985 2835 20 29.25+E 29.25+F
1212 1732 2425 3464 22 32.25+E 32.25+F
1454 2077 2908 4155 24 35.00+E 35.00+F
1718 2454 3436 4909 26 37.75+E 37.75+F
2004 2863 4008 5726 28 40.75+E 40.75+F
2313 3303 4624 6605 30 43.50+E 43.50+F
BEARING DESIGN
LOAD (MPa)
BRG
PLATE
UNGUIDED
SOLE PLATE
24 35 48 70 A C D
MAXIMUM VERTICAL LOAD
(kN)(mm) (mm) (mm)
212 309 424 618 125 202+E 202+F
323 472 647 944 150 237+E 237+F
459 669 917 1338 175 272+E 272+F
618 901 1235 1801 200 308+E 308+F
800 1167 1600 2333 225 343+E 343+F
1006 1467 2012 2934 250 379+E 379+F
1235 1802 2471 3603 275 414+E 414+F
1488 2171 2977 4341 300 449+E 449+F
1765 2574 3530 5148 325 485+E 485+F
2065 3012 4130 6024 350 520+E 520+F
2309 3368 4618 6735 375 555+E 555+F
2651 3866 5302 7732 400 591+E 591+F
3016 4398 6032 8797 425 626+E 626+F
3405 4965 6810 9930 450 661+E 661+F
3817 5567 7634 11133 475 679+E 697+F
4253 6202 8506 12405 500 732+E 732+F
5196 7577 10391 15154 550 803+E 803+F
6232 9089 12465 18178 600 874+E 874+F
7363 10378 14727 21477 650 944+E 944+F
8589 12525 17177 25050 700 1015+E 1015+F
9908 14405 19816 28899 750 1086+E 1086+F
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Lubron TF Structural 9
Lubron TFSelf-LubricatingPTFE Spherical Bearings
GUIDED SPHERICAL BEARING
SIZE CHART (MM)SIZE CHART (INCHES)
BEARING DESIGN
LOAD (ksi)
BRG
PLATE
GUIDED
SOLE PLATE
3.5 5.0 7.0 10.0 A C D
MAXIMUM VERTICAL LOAD(kips) (inch) (inch) (inch)
50 71 99 142 5 6.00+2G 6.00+F
76 108 152 216 6 7.00+2G 7.00+F
107 153 215 307 7 8.00+2G 8.00+F
144 206 289 431 8 9.00+2G 9.00+F
187 267 374 535 9 10.00+2G 10.00+F
235 336 470 672 10 11.00+2G 11.00+F
289 413 578 825 11 12.00+2G 12.00+F
348 497 696 994 12 13.00+2G 13.00+F
413 589 825 1179 13 14.00+2G 14.00+F
483 689 965 1379 14 15.00+2G 15.00+F
539 770 1078 1539 15 16.00+2G 16.00+F
619 884 1237 1767 16 17.00+2G 17.00+F
704 1005 1407 2011 17 18.00+2G 18.00+F
794 1135 1589 2270 18 19.00+2G 19.00+F
891 1272 1781 2545 19 20.00+2G 20.00+F
992 1418 1985 2835 20 21.00+2G 21.00+F
1212 1732 2425 3464 22 23.00+2G 23.00+F
1454 2077 2908 4155 24 25.00+2G 25.00+F
1718 2454 3436 4909 26 27.00+2G 27.00+F
2004 2863 4008 5726 28 29.00+2G 29.00+F
BEARING DESIGN
LOAD (MPa)
BRG
PLATE
GUIDED
SOLE PLATE
24 35 48 70 A C D
MAXIMUM VERTICAL LOAD(kN)
(mm) (mm) (mm)
212 309 424 618 125 150+2G 150+F
323 472 647 944 150 175+2G 175+F
459 669 917 1338 175 200+2G 200+F
618 901 1235 1801 200 225+2G 225+F
800 1167 1600 2333 225 250+2G 250+F
1006 1467 2012 2934 250 275+2G 275+F
1235 1802 2471 3603 275 300+2G 300+F
1488 2171 2977 4341 300 325+2G 325+F
1765 2574 3530 5148 325 350+2G 350+F
2065 3012 4130 6024 350 375+2G 375+F
2309 3368 4618 6735 375 400+2G 400+F
2651 3866 5302 7732 400 425+2G 425+F
3016 4398 6032 8797 425 450+2G 450+F
3405 4965 6810 9930 450 475+2G 475+F
3817 5567 7634 11133 475 500+2G 500+F
4253 6202 8506 12405 500 525+2G 525+F
5196 7577 10391 15154 550 575+2G 575+F
6232 9089 12465 18178 600 625+2G 625+F
7363 10378 14727 21477 650 675+2G 675+F
8589 12525 17177 25050 700 725+2G 725+F
2313 3303 4624 6605 30 31.00+2G 31.00+F 9908 14405 19816 28899 750 775+2G 775+F
0.065G
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9908 14405 19816 28899 750 825 825
Lubron TF Structural 10
Lubron TFSelf-LubricatingPTFE Spherical Bearings
SIZE CHART (INCHES) SIZE CHART (MM)
FIXED BEARING ASSEMBLIES
2313 3303 4624 6605 30 33 33
BEARING DESIGN
LOAD (ksi)
BRG
PLATE
FIXED
UPPER PLATE
3.5 5.0 7.0 10.0 A C D
MAXIMUM VERTICAL LOAD
(kips) (inch) (inch) (inch)
50 71 99 142 5 7 7
76 108 152 216 6 8 8
107 153 215 307 7 9 9
144 206 289 431 8 10 10
187 267 374 535 9 11 11
235 336 470 672 10 12 12
289 413 578 825 11 13 13
348 497 696 994 12 14 14
413 589 825 1179 13 15 15
483 689 965 1379 14 16 16
539 770 1078 1539 15 18 18
619 884 1237 1767 16 19 19
704 1005 1407 2011 17 20 20
794 1135 1589 2270 18 21 21
891 1272 1781 2545 19 22 22
992 1418 1985 2835 20 23 23
1212 1732 2425 3464 22 25 25
1454 2077 2908 4155 24 27 27
1718 2454 3436 4909 26 29 29
2004 2863 4008 5726 28 31 31
BEARING DESIGN
LOAD (MPa)
BRG
PLATE
FIXED
UPPER PLATE
24 35 48 70 A C D
MAXIMUM VERTICAL LOAD(kN) (mm) (mm) (mm)
212 309 424 618 125 175 175
323 472 647 944 150 200 200
459 669 917 1338 175 225 225
618 901 1235 1801 200 250 250
800 1167 1600 2333 225 275 275
1006 1467 2012 2934 250 300 300
1235 1802 2471 3603 275 325 325
1488 2171 2977 4341 300 350 350
1765 2574 3530 5148 325 375 375
2065 3012 4130 6024 350 400 400
2309 3368 4618 6735 375 450 450
2651 3866 5302 7732 400 475 475
3016 4398 6032 8797 425 500 500
3405 4965 6810 9930 450 525 525
3817 5567 7634 11133 475 550 550
4253 6202 8506 12405 500 575 575
5196 7577 10391 15154 550 625 625
6232 9089 12465 18178 600 675 675
7363 10378 14727 21477 650 725 725
8589 12525 17177 25050 700 775 775
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Lubron TF Structural 11
Lubron TFSelf-LubricatingPTFE Spherical Bearings
MATERIALS
All materials used in the manufacture of LUBRON TF sphericalbearings shall meet the following requirements unless otherwise
specified in the Project Plans, Specifications and Special Provisions:
Structural steel shall conform to the requirements of ASTM A36,
ASTM A709 Grade 36 (250), ASTM A709 Grade 50 (345), ASTM
A572 Grade 50 (345), ASTM A709 Grade 50W (345W) or ASTM
A588 Grade A.
Stainless steel shall conform to the requirements of ASTM A240
Type 304 or Type 316.
Hard chromium plating shall conform to the requirements of
Federal Specification QQ-C-320B Class 2.
PTFE (polytetrafluoroethylene) surfaces shall consist of unfilled
PTFE woven fabric made from oriented multi-filament 100% virgin
PTFE fibers and other reinforcing fibers. The resin in the filaments
shall be virgin PTFE material (not reprocessed) meeting the
requirements of ASTM Designation D4441 Type VI (superceding
ASTM Designation D1457). The PTFE fabric shall have a minimum
thickness of 0.20 (0.5 mm) and a maximum thickness of 0.125
(3.2 mm) after compression.
High strength bolts and studs shall conform to the requirements of
ASTM A325 Type 1 or ASTM A449 Type 1 unless otherwise
specified. Heavy hex nuts shall conform to the requirements of ASTM
A194 Grade 2H or ASTM A563 unless otherwise specified, and
hardened steel washers shall conform to the requirements of ASTM
F436 unless otherwise specified.
PRECISION MACHINING
Our diverse design and manufacturing skills combine to assure consistent
quality and reliable performance. Our facilities are modern, flexible and
capable of complex jobs with precision accuracy.
All machining shall be performed in full compliance with the Project Plans,
Specifications and Special Provisions. All metal-to-metal contact surfaces
shall be machined or blanchard ground. Concave and convex bearing
components are typically machined from solid metal plate using CNC
equipment.
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Lubron TF Structural 12
Lubron TFSelf-LubricatingPTFE Spherical Bearings
WELDING
Welding of spherical bearing components shall be performed in
accordance with the requirements of ANSI/AASHTO/AWS D1.1, AWS D1.5
or AWS D1.6 unless otherwise specified. On-site welding of the spherical
bearing assembly shall be permitted, provided welding procedures are
established, which restrict the maximum temperature reached by the
bonded area to less than 300F (150C) as determined by temperature-
indicating wax pencils or other suitable means.
CORROSION PROTECTION
Corrosion protection including painting and zinc metalizing of all exposed
carbon steel plates and fasteners shall be performed in accordance withProject Plans, Specifications and Special Provisions.
TESTING
Spherical bearing assemblies shall be tested in full compliance with the
Project Plans, Specifications and Special Provisions. Prototype and
production testing shall be performed in-house or by an independent
testing laboratory subject to the approval of the Project Engineer. Bearings
up to 4000 kips can be tested in-house for compression proof load,
rotation, wear and coefficient of friction.
INSTALLATION
All spherical bearing assemblies shall be installed in accordance with the
Project Plans, Specifications and Special Provisions. Spherical bearing
assemblies must be handled with extreme care to prevent damage to any
of the bearing components. LUBRON TF spherical bearings shall be
furnished with temporary steel restraining plates to permit handling and
installation of the bearing as a complete assembled unit. Verification of
proper alignment and removal of the temporary restraining plates is
absolutely essential prior to the bearings being placed into service.
The spherical bearing assembly shall be installed with the sole plate
positioned above the other components. The centerline of the concave
component shall be positioned in vertical alignment with the centerline of
the convex component. The concave component must also be properly
positioned on the sole plate to allow for any required presetting. The
restraining plates should be securely bolted to the sole and masonry
plates with the concave component in the preset position.
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Lubron TF Structural 13
Lubron TFSelf-LubricatingPTFE Spherical Bearings
LUBRON TF spherical bearings shall be installed
level and parallel to within 1/32 inch per foot.
For cast-in-site structures, spherical bearings are
generally furnished with welded anchor studs or
anchor bolts to secure the assembly in place.
Formwork may be erected around the bearing and
concrete poured over the bearing, providing
adequate steps are taken to prevent contamination
from concrete debris.
All bearing surfaces must be effectively masked
and protected during welding and painting from
weld splatter, abrasive blast, dust and paint.
Protective covering must be removed afterinstallation is complete, and the bearings surfaces
cleaned with a dry soft cloth.
QUALITY ASSURANCE
LUBRON TF spherical bearings are manufactured and inspected in strict
compliance with the requirements ISO 9002. From procurement and
fabrication to final inspection, every phase of manufacture is monitored
by Quality Control personnel to ensure that all materials and workmanship
meet or exceed the requirements of the Project Plans and Special
Provisions. Every step is planned, performed, checked and certified inwriting. Non-destructive testing, including radiograph, magnetic particle and
liquid penetrant examination, shall be performed in accordance with ASTM
and ASME specifications and certified by independent testing laboratories.
ENGINEERING SUPPORT
We offer a variety of engineering services from the selection of bearing
materials to in-house testing of bearing assemblies to simulate load,
movement, velocity, temperature and other environmental conditions
present during the actual operation of LUBRON TF bearings. Bearing
design, AutoCADdrawing preparation, prototype testing, consulting
and on-site engineering services are available upon request.
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Lubron TF Structural 14
Lubron TFSelf-LubricatingPTFE Spherical Bearings
GUARANTEED PERFORMANCE
Our leadership and reputation for service and product knowledge has beenachieved through a strong commitment to total customer satisfaction.
Every LUBRON TF bearing is guaranteed to perform reliably and trouble-
free, and every effort will be made to accommodate our customers
delivery requirements in the shortest time possible.
ORDERING INFORMATION
Information for ordering LUBRON TF spherical bearing assemblies shall
include the following:
Type of bearing (unguided, guided or fixed)
Maximum total vertical load (dead & live)
Minimum vertical load (dead only)
Maximum transverse horizontal load (occurring simultaneously with
minimum vertical load)
Maximum allowable concrete bearing load
Maximum rotation required about vertical axis
Maximum longitudinal and transverse movements
Bearing offset if required
Anchorage required
Corrosion protection required
Proof testing required
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Lubron TF Structural 15
Lubron TFSelf-LubricatingPTFE Spherical Bearings
LUBRON Self-Lubricating Bearings for
Structural Applications
LUBRON SL
LUBRON AQ bearings are widely used in structural applications for
loads up to 8000 psi. Available in a variety of high strength bronze alloys,
LUBRON SL bearings are permanently embedded with solid lubricants
contained in trepanned or circular recesses.
LUBRON TF
LUBRON TF woven PTFE fiber bearings are designed to provide thelowest possible coefficient of friction for high load structural applications.
Interwoven with secondary glass fibers and bonded under pressure and
temperature to carbon steel or stainless substrates, LUBRON TF bear-
ings are capable of static loads up to 60,000 psi.
LUBRON TR
LUBRON TR PTFE resin slide bearings provide an economic alternative
for low friction applications with loads up to 2,000 psi. LUBRON TR slide
bearings consist of PTFE resin sheets bonded to either a combination of
carbon steel, stainless steel, elastomer, or fabric pads. For higher loads,LUBRON TR bearings are also available reinforced with the addition of up
to 25% glass fibers.
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Lubron Bearing Systems17211 Metzler Lane
Huntington Beach, CA 92647
USA
Phone: 714-841-3007
Fax: 714-841-3507
Email: [email protected] 0508